Use Academic Search Ultimate to find full-text popular periodical articles or scholarly (peer reviewed) journal articles covering most subject areas. A great place to find reliable articles for your research.
Articles from the McGraw Hill Encylopedia of Science and Technology. An excellent source of scientific definitions and articles on basic scientific concepts.
Use Academic Onefile Select to find full-text popular periodical articles or scholarly (peer-reviewed) journal articles in most subject areas. A great place to find reliable articles for your research.